* {
            margin: 0;
            padding: 0;
        }
        html {
            box-sizing: border-box;
            font-family: sans-serif;
            max-width: 1080px;
            margin: 0 auto;
        }
        body {
            max-height: 100vh;
            display: flex;
            justify-content: center;
        }
        .wrapper {
            text-align: center;
        }
         header h1 {
        margin-top: 20px;
        font-size: 1.4rem;
        text-align: center;
    } 
header h2 {
    margin-top: 20px;
    margin-bottom: 20px;
    font-size: 1.2rem;
}
/*css for wrapper*/
   .wrapper {
    display: block;
}
.gallery {
    margin-top: 20px;
    display: grid;
    grid-template-columns: 1fr;
    grid-gap: 30px;
}
.gallery img {
    width: 90%;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(104,104,104,0.8);
} 
/*end css for wrapper*/
.return {
    margin-top: 20px;
}
 footer {
        text-align: center;
        padding: 30px 0 30px 0;
    }
/*Css for navigation buttons*/
.styled {
    border: 0;
    line-height: 2.5;
    padding: 0 15px;
    font-size: 1rem;
    text-align: center;
    color: #fff;
    text-decoration: none;
    text-shadow: 1px 1px 1px #000;
    border-radius: 10px;
    background-color: blue;
}
.styled:hover {
    background-color: deepskyblue
}

/*End css for navigation buttons*/
/*Css for larger screens and multiple columns*/
@media  (min-width: 756px) {
    .gallery {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        
    }
}